| Form type | Sec Links | Description | Filing date | Reporting date |
|---|---|---|---|---|
| SC 13G/A | Report | SEC SCHEDULE 13G | Feb 9, 2024 | |
| SC 13G/A | Report | SEC SCHEDULE 13G | Feb 10, 2023 | |
| SC 13G/A | Report | SCHEDULE 13G/A | Feb 10, 2022 | |
| SC 13G/A | Report | SCHEDULE 13G/A | Feb 10, 2022 | |
| SC 13G/A | Report | SEC SCHEDULE 13G | Feb 8, 2022 | |
| SC 13G/A | Report | SEC SCHEDULE 13G | Feb 16, 2021 | |
| SC 13G/A | Report | SCHEDULE 13G/A | Feb 10, 2021 | |
| SC 13G/A | Report | SCHEDULE 13G/A | Feb 8, 2021 | |
| SC 13G/A | Report | SCHEDULE 13G/A | Feb 14, 2020 | |
| SC 13G/A | Report | SCHEDULE 13G/A | Feb 12, 2020 | |
| SC 13G | Report | SCHEDULE 13G | Feb 12, 2020 | |
| SC 13G | Report | SCHEDULE 13G | Feb 11, 2020 | |
| SC 13G | Report | Feb 4, 2020 | ||
| SC 13G/A | Report | SCHEDULE 13G/A | Feb 14, 2019 | |
| SC 13G/A | Report | SCHEDULE 13G/A | Feb 8, 2019 | |
| SC 13G/A | Report | Jan 22, 2019 | ||
| SC 13G | Report | SCHEDULE 13G | Feb 14, 2018 | |
| SC 13G/A | Report | SCHEDULE 13G/A | Feb 9, 2018 | |
| SC 13G | Report | Jan 30, 2018 | ||
| SC 13G/A | Report | Apr 10, 2017 | ||
| SC 13G/A | Report | Feb 14, 2017 | ||
| SC 13G/A | Report | SCHEDULE 13G/A | Feb 9, 2017 | |
| SC 13G | Report | Jan 27, 2017 | ||
| SC 13G/A | Report | SCHEDULE 13G/A | Feb 9, 2016 | |
| SC 13G/A | Report | Feb 4, 2016 | ||
| SC 13G/A | Report | Feb 18, 2015 | ||
| SC 13G/A | Report | Feb 13, 2015 | ||
| SC 13G/A | Report | SCHEDULE 13G/A | Feb 5, 2015 | |
| SC 13G/A | Report | Feb 18, 2014 | ||
| SC 13G/A | Report | Feb 14, 2014 | ||
| SC 13G/A | Report | SCHEDULE 13G/A | Feb 10, 2014 | |
| SC 13G/A | Report | 13G AMENDMENT | Feb 5, 2014 | |
| SC 13G/A | Report | SCHEDULE 13G/A | Dec 6, 2013 | |
| SC 13G/A | Report | Feb 15, 2013 | ||
| SC 13G/A | Report | SCHEDULE 13G/A | Feb 11, 2013 | |
| SC 13G/A | Report | Feb 11, 2013 | ||
| SC 13G/A | Report | Feb 7, 2013 | ||
| SC 13G/A | Report | SC 13G/A MFRI, INC. | Feb 15, 2012 | |
| SC 13G/A | Report | Feb 14, 2012 | ||
| SC 13G/A | Report | SCHEDULE 13G/A | Feb 14, 2012 | |
| SC 13G/A | Report | Feb 10, 2012 | ||
| SC 13G/A | Report | Feb 15, 2011 | ||
| SC 13G/A | Report | MFRI, INC. | Feb 14, 2011 | |
| SC 13G/A | Report | SCHEDULE 13G | Feb 11, 2011 | |
| SC 13G/A | Report | Feb 10, 2011 | ||
| SC 13G/A | Report | Feb 10, 2011 | ||
| SC 13G/A | Report | Feb 8, 2011 | ||
| SC 13G | Report | Jun 11, 2010 | ||
| SC 13G/A | Report | Feb 17, 2010 | ||
| SC 13G/A | Report | MFRI, INC. | Feb 12, 2010 | |
| SC 13G/A | Report | Feb 12, 2010 | ||
| SC 13G/A | Report | 13G FILING | Feb 10, 2010 | |
| SC 13G | Report | SCHEDULE 13G | Feb 8, 2010 | |
| SC 13G/A | Report | Feb 4, 2010 |